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  1. Article

    Open Access

    Multiphysics simulations of a cylindrical waveguide optical switch using phase change materials on silicon

    This work presents the design and multiphysics simulation of a cylindrical waveguide-based optical switch using germanium-antimony-tellurium (GST) as an active phase change material. The innovative cylindrical...

    Alireza Malek Mohammad, Mahmoud Nikoufard, Senour Abdolghaderi in Scientific Reports (2024)

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  2. No Access

    Article

    Kerr nonlinear effect in the graphene-based wedged hybrid plasmonic waveguide

    The plasmonic nanostructures optical properties, both linear and nonlinear, offer valuable insights for designing nanoscale all-optical devices with rapid response times. This study proposes a novel plasmonic ...

    Hossein Rahimi, Mahmoud Nikoufard… in Optical and Quantum Electronics (2024)

  3. No Access

    Article

    Graphene-based hybrid plasmonic optical electro-absorption modulator on InP platform

    This paper presents a novel design of an optical electro-absorption modulator based on a hybrid plasmonic structure with a graphene layer on the generic InP platform. Graphene-based optical modulators have the...

    Hamid Nezamdoost, Mahmoud Nikoufard, Hamed Saghaei in Optical and Quantum Electronics (2024)

  4. No Access

    Article

    Efficient Coupling in Transverse Strip Metal-Insulator-Metal Structure on Silicon-on-Insulator Layer Stack

    This article presents a new directional coupling between two transverse strip metal-insulator-metal (TS-MIM) waveguides on silicon-on-insulator (SOI) platform at 1.55 μm wavelength. The directional coupling be...

    Vahid Sadeghzadeh Maraghi, Mahdi Eslami, Mahmoud Nikoufard in Silicon (2022)

  5. No Access

    Article

    An investigation on shallow-etched InP-based hybrid nanoplasmonic waveguides for nonlinear applications

    Hybrid plasmonic waveguides (HPWs) can provide a good compromise between loss and confinement. The Kerr nonlinear effect is potentially useful for designing new optical devices such as optical switches. In thi...

    Mojtaba Dehghani Firouzabadi, Mahmoud Nikoufard… in Journal of Computational Electronics (2020)

  6. No Access

    Article

    Modifying the figure of merit in hybrid plasmonic waveguide for Kerr nonlinear effect

    Hybrid plasmonic waveguide (HPW) has offered the promise to combine long propagation lengths and strong modal confinement at sub-wavelength scale. All-optical signal processing can be achieved by relying on no...

    Mojtaba Dehghani Firouzabadi, Mahmoud Nikoufard… in Indian Journal of Physics (2020)

  7. No Access

    Article

    Ultra-Wideband Photonic Hybrid Plasmonic Horn Nanoantenna with SOI Configuration

    The current study proposes a hybrid plasmonic horn-like nanoantenna with a silicon-on-insulator (SOI) configuration. This nanoantenna can be utilized for broadband nanophotonic applications and can operate in ...

    Abbas Nourmohammadi, Mahmoud Nikoufard in Silicon (2020)

  8. No Access

    Article

    Enhancement of Second Harmonic Generation in Metal-Insulator-Metal Plasmonic Waveguides

    Nonlinear effects such as second harmonic generation (SHG) are important for applications such as switching and wavelength conversion. In this study, the generation of second harmonic in metal-insulator-metal ...

    Mohamadreza Soltani, Mahmoud Nikoufard, Massoud Dousti in Plasmonics (2017)

  9. No Access

    Article

    Optical Kerr nonlinear effect in InP-based hybrid plasmonic waveguides

    This paper presents a novel nonlinear hybrid plasmonic waveguide structure on the InP-substrate. The proposed hybrid plasmonic waveguide consists of a thin layer of nonlinear polymer of DDMEBT on a conventiona...

    Mojtaba Dehghani Firouzabadi, Mahmoud Nikoufard… in Optical and Quantum Electronics (2017)

  10. Article

    Open Access

    Ultra-compact photonic crystal based water temperature sensor

    We design an ultra-compact water temperature sensor by using the photonic crystal technology on the InP substrate at the 1.55-μm wavelength window. The photonic crystal consists of rods in a hexagonal lattice ...

    Mahmoud Nikoufard, Masoud Kazemi Alamouti, Alireza Adel in Photonic Sensors (2016)

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  11. No Access

    Article

    Investigation of Second Harmonic Generation in Asymmetric Metal-Insulator-Metal Plasmonic Waveguides

    In this study, the second harmonic generation in metal-insulator-metal (MIM) plasmonic waveguides was investigated for both symmetric and asymmetric structures. Nonlinear processes such as second harmonic gene...

    Mohamadreza Soltani, Mahmoud Nikoufard, Massoud Dousti in Plasmonics (2016)